Lamp.



J. S. TEALL.

LAMP. APPLICATION mm APR. 19, 1916.

1 ,2355256 Patented July 31, 1917.

2 SHEETS-SHEET 1.

J. S. TEALL. 1

LAMP.

APPLlCATiON FILED APR 19. 19:5.

Patented July 31, 1917.

2 SHEETS--SHEET 2.

IFJK AL JAMES S. TEALL, OF ROCHESTER, NEW YORK.

LAMP.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed April 19, 1916. Serial No. 92,282.

To all whom it may concern Be it known that 1, JAMES S. TEAILL, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

The present invention relates to lamps and more particularly to the type which is adapted to be arranged upon'the deck of a railroad car for the purpose of giving a signal, although certain features of the invention are capable of being embodied in other types of lamps. An object of this invention is to provide a construction in which the lamp may be adjusted to give a signal, or to be rendered ineflective without extinguishing the light, this result being secured without the necessity of turning the outside lamp casing which, in the construction in use, is very heavy and in many instances is difficult to operate. Another object of the invention is to provide a construction in which the lamp may be adjusted and entirely controlled from within the vehicle so that it is unnecessary for the railroad Operative to leave the vehicle in order to set the signals or attend to the lamp. Still another object of the invention is to construct the lamp so that a proper supply of air to the burner will be maintained without the danger of having the lamp extinguished by drafts of air.

To these and other ends, the invention consists of certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings Figure 1 is a vertical section through a lamp constructed in accordance with this invention;

Fig. 2 is a perspective view of the upper portion of the inner or lamp casing;

Fig. 3 is a section on the line aa, Fig. 1; and i Fig. 4 is a detail view of the strip lenssecuring ring.

Referring more particularly to the illustrated embodiment of the invention, 1 indicates a tubular casing member, provided above its lower edge with a surrounding flange 2 which rests upon and is secured to a deck 3 of a car about an opening through which the tubular casing member depends. Opposite walls of this tubular casing member, above the flange 2, are provided with openings, and in these openings annular flaring members at are secured to project from the exterior of the casing, said flaring members having annular flanges 5 at their outer edges. Against each of these flanges a lens 6 abuts, being held thereto by a split ring 7 having its split portion connected by an adjusting bolt 8. This ring has an inwardly-turned annular flange 9 at one edge, and an inwardly-bent bead parallel with said flange, the face of the bead adjacent the flange being inclined. The annular flange 9 engages the rear face of the annular flange 5, and the inclined face of the bead 10 engages the lens 6 near its edge so that the lens is held firmly against the flange 5 by the bead 10 upon the tightening of the adjustment bolt 8.

The cylindrical portion 1 has its portion within the car provided with projections 11, and is received within an annular flange 12 on an annular bottom plate 13, the flange having bayonet slots 13 to receive the pro jections 11. lVithin this bottom plate 13 an inner casing is rotatable said inner casing forming a lamp chamber and having a lower portion 14 tapering toward its upper end and an annular bead 15 near its bottom resting upon the annular bottom plate 13 and serving to support the inner casing. Below the annular plate 13 the lower portion 14: of the inner casing has a projecting portion to which is secured a ring 16 which serves to confine the head 15 against the top surface of the bottom plate 13. This ring 16 carries a centering device, such as a spring-pressed ball 17 which is adapted to enter any one of four depressions 18 formed in the under surface of the annular plate 13 for the purpose of determining the position of the rotary inner casing 14.

The lower portion 1% of the inner casing preferablv confines and supports an oil-pot 19 to which the lamp burner 20 is secured. To this end the oil-pot has a bottom 20 pressed upivardly into the body of the pot and provided with an oinwardly extending,

flange 21 from which a vertical annular flange 22 projects. A rod 23 extends from one side of the flange to the other and is surrounded by a tube 2% in the pressed-up bottom to serve as a handle by which the oilpot may be connected and disconnected from the lamp. The annular flange fits over the lower end of the casing 1e, and those portions of the rod 23 between the flange 22 and the sides of the pot enter into bayonet slots 25 in the lower edge of the casing i l and are held therein by locking springs 26.

The upper portion of the inner casing 27 is preferably of rectangular form in horizontal cross-section, and is detachably secured to the lower portion. To this end it has a sleeve portion 28, fitting over the upper end of the lower portion ll and connected thereto by pins 29 operating in bayo net slots 30 in the sleeve portion 28, a wire spring 31, which is secured at both ends, having a deflected portion between its secured ends, engaging a pin 29 to prevent the turning of the portion 2'7 on the portion ll. The two opposite walls of the portion 27 are closed while the other two opposite walls areprovided with openings 33, over which two glass plates Ell are adapted to be arranged, these plates being of any desired colors in order that colored lights may be visible through the lenses (3 to give the desired signals. The platesBl may be secured in place by springs attached at their ends to the casing member 27, and springs 36 may be secured over the closed walls in order to provide magazines for the retention of plates of different colors, or of plates of the same color to be used when the plates over the openings have become bro ren. From the corners of the rectangular member 2? project flanges 3', the purpose of the latter being to prevent the escape of light from the openings 3% through the lenses 6, when the openings 34: are turned away from the lenses for the purpose of shutting off light from the lamp burner.

lVita the end in view of supplying air to the burner and, at the same time, for preventing drafts from affecting the light, the lower portion 1a: of the inner casing may be provided with air inlet openings 35" within the outer casing near the bottom of the latter, said bottom being also provided with openings indicated at 36 The top or cover 37 of the casing,'which is in the form of a cap on the outer casing connected to thelatter by a bayonet joint 38, carries a chimney 39, the lower end of which is flared at it) to a diameter greater than the diameter of the open upper end of the lamp chamber. A tubular portion atl projects upwardly from the cover 37 and connects with the upper end of the chimney 35 to provide an air space or chamber ii, the tubular portion ll having openings l3 for the inlet of air into end of the chimney'in spaced relation thereto by standards l5. To these standards is also secured a tapering open-ended sleeve e6 which projects above and below the open end of the chimney in spaced relation to the tubular )ortion l1 its lower end bein sraced from the cover or top 37 and its upper end being spaced from the cap 46, the diameter of the upper end of the open-ended sleeve being less than the diameter of the cap, and said end of the sleeve being substantially in the plane of the lower edge of the cap. By this arrangement, any drafts of air passing into either end of the open-ended sleeve will impinge the co'ncaved side of the cap at and be deflected by the latter over or out of the upper end of the tapering sleeve without passing down the chimney. At the same time, should any drafts pass through the openings 4:3, they will be deflected by the flaring end 40 of the chimney in the manner previously described.

A lamp constructed in accordance with this invention has its outer casing attached stationarily to the roof of the vehicle, so that a lens or lenses on the casing maintain a fixed position. Signaling is effected by interposing colored glass or an opaque wall between the light source and the lens. This is s cured by shifting the glass or the opaque wall from a point within the car. The lamp or burner may be removed for the purpose of cleaning or lighting from within the car. Air is fed to the burner in an effective manner without any danger of extinguishing the light by drafts.

What I claim as my invention and desire to secure by Letters Patent is 1. A lamp comprising a stationary outer casing having a lens in one of its walls, and a removable bottom wall provided with an opening, a supporting flange projecting from said casing above the bottom wall, a lamp chamber rotatable in the casing and projecting through said opening in the removable bottom wall to rotate therein, said lamp chamber having a wall through which light cannot pass arranged to be interposed between the lens and the lamp within the lamp chamber, and said lamp chamber extending below the bottom and carrying means for engaging the bottom on the upper and lower sides thereof, and a lamp pot closing the lower end of said lamp chamber and detachably engaging with that portion which projects below the bottom of the sta tionary casing.

2. A lamp comprising a stationary outer casing having a lens in one of its walls, a lamp chamber rotatablein the casing, and spaced from the walls of the latter, said chamber having a wall through which light cannot pass arranged to be interposed be tween the lens and the lamp within the lamp chamber, a lamp pot secured near its bottom to the lamp chamber and spaced from the lamp chamber above the secured portion to provide an air space for feeding air to the lamp burner, the lamp chamber having openings below the top of the lamp pot and communicating with the space between the casing and the lamp chamber by which air may enter the air space about the lamp pot from the space about the lamp chamber, a chimney depending into the casing and having its lower end flared and spaced from the upper end of the lamp chamber, and means for admitting air in the top of the *asing about the chimney and above the space between the chimney and the lamp chamber.

3. A lamp comprising a stationary outer casing, having a lens in one of its walls, a lamp chamber rotatable in said casing and having a plurality of openings which may be brought opposite to the lens in the outer casing, flanges projecting from opposite sides of the openings, glass plates fitted between the flanges, and spring clips extending between the flanges to hold the plates to the rotatable lamp chamber.

a. A signal lamp comprising a stationary outer casing having a lens in one of its walls and provided with a removable bottom wall having an opening in its bottom, a rotatable lamp chamber extending through said opening to project within the outer casing and also below the latter, said lamp chamber carrying means for engaging said bottom wall on opposite sides thereof and having a wall through which light cannot pass, arranged to be interposed between the lens and the lamp within the lamp chamber upon the rotation of the said lamp chamber and also having an opening in its bot-tom wall through which the lamp may be introduced. 5. A signal lamp comprising a stationary outer casing having a lens in one of its walls, and provided with a surrounding flange on its side walls in spaced relation to the bottom, the bottom having an opening and depressions about the opening, a rotatable lamp chamber extending through the opening in the bottom and supported on the bottom about the opening to project within the outer casing and also below the latter, said lamp chamber having a wall through which light cannot pass, arranged to be interposed between the lens and the lamp within the lamp chamber upon the rotation of the latter, and adevice carried by the portion of the lamp chamber projecting below the outer casing, to engage within said depressions for the purpose of se curing the lamp chamber in difl'erent positions.

6. A signal lamp comprising a stationary outer casing having a lens in one of its walls and provided with an opening in its bottom, a rotatable lamp chamber having a surrounding bead resting upon the bottom about the opening, said chamber projecting downwardly through the opening, and having a wall through which light cannot pass, arranged to be interposed between the lens and the lamp within the lamp chamber upon the rotation of said lamp chamber, a ring secured to said projecting portion, and a centering device carried by the ring and engaging with the bottom of the stationary outer casing.

7. A lamp comprising an outer casing provided with a chimney having a flaring lower end and with a chamber surrounding said chimney having air inlet openings, an inner casing forming a lamp chamber and spaced from the outer casing and from the lower end of the chimney, its upper end being open, and openings being provided in the inner casing near the bottom of the outer casing, and a burner arranged within the mner casing.

8. In a lamp, a lamp chamber, a chimney, a wall surrounding the chimney, opening at its lower end to the lamp chamber, and connected to the upper end of the chimney to form a chamber closed at its top, the wall having openings below said closed top, an open ended sleeve projecting above and below said closed top of the chamber and above and below said openings and open at its bottom to the outside of the lamp, and a cap supported above and in spaced relation to the upper of the open ended sleeve and having a greater diameter than said upper end.

9. A lamp comprising an outer casing, a chimney having a flaring lower end, an annular wall surrounding said chimney having air inlet openings, a horizontal partition connecting the upper ends of the chimney and the annular wall, an open-ended sleeve surrounding said chamber and projecting above and below said air inlet openings and above the annular wall, a cap above the chimney, an inner casing forming a lamp chamber and spaced from the outer casing and from the lower end of the chimney, its upper end being open and openings being provided in the inner casing near the bottom of the outer casing, and the outer casing being provided with openings in its bottom, and a bumer arranged in the inner 1 casing.

10. A signal lamp comprising an outer casing having two lenses in opposite walls, a source of light, and a rotatable casing surrounding the source of light within the outer casing and having two opposite walls through which light cannot pass adapted to be interposed between the source of light and the lenses and also having two glass covered openings in other opposite walls adapted to be interposed between the source of light and the lenses outwardly-project ing flanges'being provided on the inner oasing on opposite sides of the closed wills to out oii' the light when the closed walls are opposite the lenses.

JAMES S. TEALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of "Patents. Washington, D. G. 

